[英]backtrader plot error loading backend 'TkAgg'
I try to use backtrader but get an error each time I try to plot something... this code, a simple copy paste of an working exemple leed me to this error: ImportError: Cannot load backend 'TkAgg' which requires the 'tk' interactive framework, as 'qt5' is currently running我尝试使用 backtrader,但每次尝试绘制某些内容时都会出现错误......这段代码,一个工作示例的简单复制粘贴让我发现了这个错误:ImportError:无法加载后端'TkAgg',需要'tk'交互式框架,因为“qt5”当前正在运行
import backtrader as bt
from datetime import datetime
class firstStrategy(bt.Strategy):
def __init__(self):
self.rsi = bt.indicators.RSI_SMA(self.data.close, period=21)
def next(self):
if not self.position:
if self.rsi < 30:
self.buy(size=100)
else:
if self.rsi > 70:
self.sell(size=100)
#Variable for our starting cash
startcash = 10000
#Create an instance of cerebro
cerebro = bt.Cerebro()
#Add our strategy
cerebro.addstrategy(firstStrategy)
#Get Apple data from Yahoo Finance.
data = bt.feeds.Quandl(
dataname='AAPL',
fromdate = datetime(2016,1,1),
todate = datetime(2017,1,1),
buffered= True
)
#Add the data to Cerebro
cerebro.adddata(data)
# Set our desired cash start
cerebro.broker.setcash(startcash)
# Run over everything
cerebro.run()
#Get final portfolio Value
portvalue = cerebro.broker.getvalue()
pnl = portvalue - startcash
#Print out the final result
print('Final Portfolio Value: ${}'.format(portvalue))
print('P/L: ${}'.format(pnl))
#Finally plot the end results
cerebro.plot(style='candlestick')
Im working on anaconda spyder4 with last updated python and matplotlib我正在使用最新更新的 python 和 matplotlib 处理 anaconda spyder4
You could try:你可以试试:
import matplotlib
matplotlib.use('QT5Agg')
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